New approach to time-domain equalization and frequency-domain transient compensation for a DMT-based ADSL system

Author

Straussnigg, D. ; Kozarev, Aleksandra ; Schenk, Heinrich ; Bodner, Joachim

Author_Institution

Microelectron. Design Centers Austria, Infineon Technol., Villach, Austria

Volume

1

fYear

2001

fDate

4-7 July 2001

Firstpage

11

Abstract

In this paper, a new approach to time-domain equalization for a multicarrier transmission system is described. The main idea behind our method is to enhance the performance and simplify the complexity and implementation cost of the well-known FIR-based time equalization algorithm (TEQ), by using a simple high-pass filter for channel response shortening and improving the frequency equalization effects with additional compensation of the remaining transient in a DMT (discrete multitone modulation) symbol. Computer simulations were performed in a DMT-based ADSL simulation platform where three different configurations were tested: (1) 35-tap FIR-based TEQ, (2) shortening filter-based TEQ and (3) shortening filter and transient compensation-based TEQ.

Keywords

digital subscriber lines; equalisers; frequency-domain analysis; high-pass filters; modulation; time-domain analysis; transient response; DMT-based ADSL system; FIR-based time equalization algorithm; channel response shortening; discrete multitone modulation; frequency equalization effects; frequency-domain transient compensation; high-pass filter; multicarrier transmission system; shortening filter; time-domain equalization; Computer simulation; Delay; Discrete Fourier transforms; Equalizers; Filters; Frequency; Intersymbol interference; OFDM modulation; Time domain analysis; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON'2001, Trends in Communications, International Conference on.

Conference_Location

Bratislava, Slovakia

Print_ISBN

0-7803-6490-2

Type

conf

DOI

10.1109/EURCON.2001.937752

Filename

937752